This year you can spend more money on Christmas presents and less on travel when you travel by coach on National Express. Fares start at just £5 each way throughout December.
The fares are bookable for travel until 24 December on a wide range of routes across the UK. Eg:
London to Manchester... £5
Bristol to Birmingham... £5
London to Leeds... £5
Liverpool to London... £5
There are 50,000 tickets available at the promotional £5 fare, so the earlier you are able to book your tickets, the more chance you have of getting one
...not sure if you can use the voucher with this offer.